Cooler for liquids



.April 27, 192s. 1,582,131

J. MC K. MCDONALD COOLER FOR-LIQUIDS Filed March 31. 1924 Patented Apr. 27, 1926.

JAMES MdKERCHAn MGJBONALD, or' TE r'KE, ,NEW ZEALAND.

f i cocinan Yron. maur/ns.

Appli-cation sfil'edliti-rrrcih 31, 1924. Serial No. 703,153.

Tofa'ZZ fw/rom 'it mag/con 091%.' y

De it known that "I, Jari-)Es lMcfKfnncrian MCDo'NAnn, subject yfof :the `King 'of Great Brit-ain, residing at -'l.`e JPuke, Bay of Plenty,

vin the Dominion of 'ewZeafl-aind, Shave invented lnewY 'and luseful proveinents 1in Coolers for VLiquids, of which-fthe following is a specification.

This invention has reference to a new and improved construction of appliance that has been devised specially for use in cooling cream, milk and like liquids, but which is also useful for the cooling of any other liquids. y

The invention covers a. construction of apparatus that is particularly adaptable. for the regenerative cooling of liquids that have been heated, as for instance cream or milk that has been pasteurized, and for the cold liquid on its passage to the heater being brought into intimate contact with the liquid coming from such heater so that it is progressively cooled and the liquid passing to the heater is progressively heated. The

""apparatus may however be used as a self contained cooler by the employment of any approved cooling agency, as for instance expanded ammonia gas.

The construction devised provides for the apparatus being simply and cheaply made and for the parts being readily taken apart for cleansing purposes. It also provides for the liquid to be cooled, and also for that being heated when regenerative cooling is bef ing effected, fiowing in thin bodies overthe surfaces being reciprocally acted upon, or over the surfaces under the action of the cooling medium employed when the appliance acts as a cooler only.

This construction isshown in the accompanying drawings in which :-A

Figure l is a side elevation,

Figure 2 an end elevation,

Figure 3 an inside face view of one half of the appliance.

Figure l is a cross sectional elevation of the appliance, and

Figure 5 a plan view.

The construction devised consists in an appliance that is formed by two vertical hollow casings A-A of metal each enclosing a. narrow space between its two side walls and having closed ends and bottom. These two casings are adapted to be fitted together side by side, and for this purpose each one is formed at its ends and bottom with [lat llia-noes -B that engage the simi-lar flanges lrvponwhe. other frame. The ftwo yare thenelamped tightly together by aneans of the iol'amps fC, o or other approved fastenings, whicfhlare imad-e `readilyremovable and replaceable.

Theinner "wallfDy of each y'casing A and A Ais formed with corrugations extending longitudinally across it and is disposed so that it lies slightly within the plane of the iianges B. The corrugatio-ns on the one casing are made to correspond with those on the other so that when the two casings are assembled together a continuous narrow corrugated passage E is formed between these walls extending from the top to the bottom of the appliance and across the full surface area of the two casings. The wallsk D at their upper ends are extended and inclined outwards from one another so that a chamber' E is formed at the top.

An inlet pipe F is led into the bottom of the passa-ge E through the end of one casing and an outlet pipe Gr leads away from one end of the chamber E. Liquid may therefore be caused to pass up through this passage E by admitting it through the pipe F and allo-wing it to overflow through the pipe G. In some cases the passage of the fliquid may be reversed. ,n

The space enclosed by each casing is covered in by an inwardly and downwardly inclinedplate H which serves to form a hopper J between the casing andthe extension of the wall D of that casing. This plate is made with perforations L all along its length so thatgliquid introduced into the hopper will be evenly distributed to flow down over the inside surface of the corrugated wall D. A supply pipe K is provided to introduce the liquid into the hopper J and a draw off pipe M to allow the liquid to flow away fromthe casing.

In use, the liquid to be cooled is delivered into the respective hoppers J so that it flows in thin streams down the insides of the walls D. At the same time the cooling medium is caused to pass up through the passage E so that it acts through the walls D upon the liquid 'flowing down the insides thereof. In regenerative cooling this latter liquid will serve to heat the liquid flowing up through the passage E. If a. specialcooling medium is used, as for instance ammonia, the top of the chamber E will be closed, the gas passing in through the inlet F, expanding in the passage and escaping through the outlet G.

Batlle plates N may be disposed at intervals upon the outsides of the respective walls D and so shaped and arranged as to cause the cooling medium to flow positively over the surfaces ot these walls as it rises through 4*the passage.

I claim A cooler for liquids, comprising two hollow casings positioned side by side and having longitudinally-corru-gated inner walls which are spaced slight-ly apart so as to conjointly torni a narrow7 serpentine passage between them, the end and bottom walls of said casings being provided with abutting marginal langes; clamps engaging said abutting flanges to secure the two casings together; a trough extending along the upper end of cach casing and inclined laterally and downwardly toward the respective corrugated wall thereof, each trough having perforations adjacent its inner longitudinal edge; a supply pipe for delivering liquid to be cooled to each trough to flow a across the same and discharge through the perforations therein onto the inner surface of the adjacent corrugated wall; and means for conveying a cooling medium to the serpentine passage to travel therethrough.

ln testimony whereof, I aix my signature. JAMES MGKERCHAR MCDONALD. 

